JP2006222887A - Dwelling machine of intercom system for multiple dwelling house and intercom system for multiple dwelling house - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dwelling machine of an intercom system for a multiple dwelling house for preventing persons of houses from missing a simultaneous broadcast, and to provide the intercom system for the multiple dwelling house. <P>SOLUTION: The dwelling machine 4 stores sound signals for simultaneous broadcasts to be transmitted from an alarm monitoring panel 1 in a storing part M. Namely, a sound signal for a simultaneous broadcast transmitted from the alarm monitoring panel 1 is stored in the storing part M and the sound signal for a simultaneous broadcast stored in the storing part M is read by a control part 40 to transmit sound of the simultaneous broadcast from a speaker 41b, and therefore, the persons of the houses can prevent from missing a simultaneous broadcast performed when the persons of the houses are absent or the like. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention is an assembly that enables communication by alternatively establishing a communication path between a common unit device installed at a common entrance of an apartment house and any one of the dwelling units installed in each dwelling unit. With regard to residential intercom systems for residential intercoms and intercom systems for collective housings, in particular, installed in common areas and management rooms of collective housing, in addition to individual calls where the common unit device and one dwelling unit communicate one-on-one. The present invention relates to a dwelling unit intercom system for an apartment house and an intercom system for an apartment house that can broadcast audio to a plurality of dwelling units all at once using the broadcast device.

Conventionally, a common area device (lobby interphone) installed at the common entrance of an apartment house and capable of voice input and output and a common area device installed at each dwelling unit of an apartment house are connected via a transmission line and shared. A plurality of dwelling units (such as an interphone master unit and a housing information panel) that establish communication paths with the shared unit device when a visitor selects a selection means (such as a numeric keypad) that the unit device has. In addition, an intercom system for an apartment house is provided that includes a door phone slave unit that is installed in each residence unit of the apartment house and is connected to the dwell unit via a slave unit connection line for calls (for example, Patent Document 1). reference). Furthermore, it is installed in the common part of the apartment house or in the manager's room, and is connected to each dwelling unit via a transmission line, and is equipped with a simultaneous broadcasting device that broadcasts audio to some or all dwelling units at once. An intercom system for collective housing is also provided.
JP 2004-88413 A

  However, in the conventional system and the dwelling unit, for example, when a broadcast is performed in the absence of a resident, there is a problem that the resident does not hear the broadcast.

  The present invention has been made in view of the above circumstances, and an object thereof is to a dwelling unit of an intercom system for an apartment house and an interphone system for an apartment house that can prevent a resident from listening to a broadcast simultaneously. It is.

  In order to achieve the above object, the first aspect of the present invention provides a common unit device installed at a common entrance of a housing complex and capable of inputting / outputting sound, and a common unit device installed at each dwelling unit of the housing complex. Multiple dwelling units that establish a communication path with the common unit when connected by a visitor and are selected by a visitor operating the selection means of the common unit and connected to the common unit. Intercom system for multi-dwelling houses, which is installed in a department or a manager's room and is connected to each dwelling unit via a transmission line and broadcasts sound to all or some dwelling units at once A communication unit for making a call with a shared device via a transmission line, and converting a broadcast broadcast audio signal transmitted from the broadcast device via the transmission line into a voice. Output all at once Broadcast transmission means for sending sound transmission means, broadcast broadcast storage means for storing broadcast broadcast sound signals, and outputting broadcast broadcast sound from the broadcast broadcast sound means by reading the broadcast broadcast sound signals stored in the broadcast broadcast storage means Means.

  The invention of claim 2 is characterized in that, in the invention of claim 1, the broadcast broadcast sounding means does not output the broadcast broadcast sound while the broadcast broadcast storage means stores the broadcast broadcast audio signal. To do.

  The invention of claim 3 is the invention of claim 1 or 2, further comprising: a broadcast notification means for notifying the start of a broadcast when the start of the broadcast is notified from the broadcast device during a call with the shared device. It is characterized by having.

  In order to achieve the above object, a fourth aspect of the invention comprises the shared unit apparatus, the plurality of dwelling units according to any one of the first to third aspects, and the broadcast apparatus. And

  In order to achieve the above object, the invention according to claim 5 includes the shared unit device, the plurality of dwelling units according to claim 3, and the simultaneous broadcasting device, wherein the dwelling unit is simultaneously transmitted via a transmission line. Provided with control signal transmission means for transmitting a control signal for requesting transmission of a broadcast audio signal, the simultaneous broadcasting device transmits storage audio signals for simultaneous broadcasting to the dwelling unit, and transmits from the dwelling unit via a transmission line. When the control signal receiving means for receiving the control signal to be transmitted and the control signal receiving means for receiving the control signal requesting transmission of the broadcast broadcast audio signal, the broadcast audio signal stored in the storage means is read out. And broadcast transmission means for transmitting to the requesting dwelling unit via a transmission line.

  According to the invention of claim 1, the broadcast audio signal transmitted from the broadcast device is stored in the broadcast storage means, and the broadcast audio signal stored in the broadcast storage means is read out by the broadcast playback means. Since the broadcast sound is output from the broadcast sound generation means, it is possible to prevent the resident from missing the broadcast that was performed when the resident was absent.

  According to the second aspect of the invention, in addition to the effect of the first aspect of the invention, it is possible to prevent problems such as disturbing the sleep of dwellers due to the inadvertent output of the broadcast sound.

  According to the invention of claim 3, in addition to the effect of the invention of claim 1 or 2, the start of the broadcast is notified to the inhabitants by the broadcast notification means, so after the call with the common unit device is over Therefore, it is possible to call attention so that residents can listen to the broadcast, and it is possible to reliably prevent the residents from missing the broadcast.

  According to the invention of claim 4, it is possible to provide an intercom system for collective housing that can prevent a resident from overhearing a simultaneous broadcast performed in the absence of the resident.

  According to the invention of claim 5, after the call with the shared device is finished, the broadcast signal can be transmitted from the broadcast device to the dwelling unit, and the broadcast can be heard. It can be surely prevented from being missed.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  An example of the system configuration of this embodiment is shown in FIG. In the present embodiment, a common unit device (lobby interphone) 2 installed at a common entrance of an apartment house and a plurality of units (only one in the figure) installed at each dwelling unit 4 are provided. 2 and the dwelling unit 4 are connected to each other via a transmission line. The transmission line includes a trunk line L1 connected to the lobby intercom 2 and a separate unit line L2 connected to each dwelling unit 4, and an alarm monitoring panel 1 installed in a manager's room of the apartment house is connected to the trunk line L1. Connected to. As this transmission line, a multi-pair twisted pair cable having three or more pairs in the sheath is used, and although not shown, a communication line La for transmitting an audio signal between the lobby intercom 2 and the dwelling unit 4. And a video line Lb for transmitting a video signal picked up by the camera 26 provided in the lobby intercom 2 and a control signal for designating the dwelling unit 4 selected by the selection means (described later) of the lobby intercom 2 are transmitted. A pair line is used for each of the control lines Lc. That is, the transmission line of the illustrated example uses three pairs of pair wires. Here, the video signal transmitted through the video line Lb is frequency-modulated in the lobby intercom 2 and is frequency-demodulated by the video processing unit 43 provided in each dwelling unit 4 and displayed on the monitor unit 45 as will be described later. .

  As shown in FIG. 3, the lobby interphone 2 is a microphone 24a and a speaker 24b for inputting / outputting voice, and a voice signal transmitted from the dwelling unit 4 via the telephone line La is signal-processed and output to the speaker 24b. The voice signal input from 24a is signal-processed and sent to the call line La, a call processing unit 25 that realizes a hands-free call, a camera 26 that images a visitor, and a video signal output from the camera 26 is frequency-modulated. Then, the video processing unit 27 for transmitting via the video line Lb, the operation switch unit 22 having a number key and a call button for designating the dwelling unit number, the dwelling unit number designated by the operation switch unit 22 and the like are displayed. A notification sound for notifying operation of the display unit 23 and the operation switch unit 22 and a notification message described later are generated and output to the speaker 24b. The notification sound generation unit 29, the control unit 20 that controls the operation of each of the above-described units with the CPU as a main component, the transmission / reception unit 21 that interfaces the control unit 20 and the control line Lc, and the audio signal output from the microphone 24a. An amplifier A1 for amplifying and an amplifier A2 for amplifying an audio signal output to the speaker 24b are provided. That is, when the visitor operates the number button of the operation switch unit 22 as a selection means and selects the visited house number, and operates the call button, the dwelling unit 2 corresponding to the house number is selected. Here, the alarm intercom 2 is connected to the lobby intercom 2 via the telephone line La and the control line Lc, and the dwelling unit number selected on the lobby intercom 2 is transmitted to the alarm intercom 1 via the control line Lc. Then, the alarm monitoring panel 1 sends a control signal (call command) to the dwelling unit 4 corresponding to the dwelling unit number to which a unique address assigned to the calling lobby intercom 2 is added via the control line Lc. And send it out.

  On the other hand, as shown in FIG. 1, the dwelling unit 4 includes a microphone 41a and a speaker 41b for inputting and outputting audio, and the microphone 41a and the speaker 41b are connected to the call processing unit 42, respectively. The call processing unit 42 is connected to a two-wire four-wire conversion unit (not shown) that converts each transmission path on the receiving side and transmission side and the two-wire communication line La to two-wire four-wire. The call processing unit 42 compares the level of the voice signal (received signal) transmitted via the call line La and the level of the voice signal (transmitted signal) output from the microphone 41a to determine the call state (received state or transmitted state). When a call state is estimated, a loss is inserted into the transmission path of the transmission signal, and when a transmission state is estimated, a loss is inserted into the transmission path of the reception signal. And an echo canceller for erasing acoustic echo generated by acoustic coupling between the microphone 41a and the speaker 41b. However, since such voice switches and echo cancellers are well known in the art, detailed illustration and description of the configuration and operation are omitted. Therefore, an audio signal can be exchanged between the lobby intercom 2 and the dwelling unit 4 through the communication line La. A visitor uses the lobby intercom 2 and a resident uses the dwelling unit 4, so that Voice calls can be made with a person.

  Further, in the dwelling unit 4, the communication line La and the video line Lb of the dwelling unit separate line L2 are respectively transmitted through a transmission path (hereinafter referred to as “call path”) of a call signal (a reception signal and a transmission signal) and a video signal. A trunk interface (not shown) that separates the routes is provided. The video signal transmission path is connected to the video processing unit 43, and the speech path is alternatively switched and connected to the call processing unit 42 and the slave unit interface unit 44. The door phone sub unit 3 is connected to the sub unit interface unit 44 through a sub unit connection line L3. The intercom unit 3 is arranged at the entrance of each dwelling unit of the apartment house and includes a microphone and a speaker. The sub unit interface unit 44 includes a bidirectional audio amplifying circuit and a communication unit for calling with the intercom unit 3. An open / close circuit for connecting the roads is provided. Therefore, in a state where the communication path is connected to the handset interface unit 44, a call between the doorphone handset 3 and the dwelling unit 4 is possible. Also, the doorphone slave unit 3 is provided with a television camera, and the slave unit interface unit 44 separates the audio signal and the video signal transmitted via the slave unit connection line L3 and sends the separated video signal to the video processing unit 43. The data can be output and displayed on the monitor unit 45. Further, the doorphone sub unit 3 is provided with a call button, and has a function of sending a call signal to the sub unit connection line L3 when the call button is operated. The dwell unit 4 has a notification sound when the call signal is detected. The ringing tone generated by the generation unit 46 is transmitted from the speaker 41b.

  In the dwelling unit 4, a liquid crystal display is used for the monitor unit 45. The video signal input to the dwelling unit 4 through the video line Lb is balanced-unbalanced converted by the main line interface, further amplified by an amplifier, and then frequency demodulated by the video processing unit 43. The video signal input to the dwelling unit 4 through the slave unit connection line L3 is also balanced-unbalanced converted by the slave unit interface unit 44, further amplified by an amplifier, and then frequency demodulated by the video processing unit 43. The video signal output from the video processing unit 43 is input to the monitor unit 45, thereby displaying a video on the screen of the monitor unit 45. That is, since the image of the visitor imaged by the camera of the lobby intercom 2 or the door phone slave unit 3 is displayed on the monitor unit 45 of the dwelling unit 4, the resident in the dwelling unit can confirm the visitor. . In addition, the notification sound generation unit 46 generates a notification sound for notifying a call from the lobby interphone 2 or the door phone sub unit 3, outputs the generated notification sound to the speaker 41 b, and uses the notification sound as a back tone. It outputs also to the separate line L2 or the subunit | mobile_unit connection line L3.

  The dwelling unit 4 is provided with a control unit 40 having a CPU as a main component and controlling an internal circuit, and a transmission / reception unit 47 serving as an interface with the control line Lc is connected to the control unit 40. The transmission / reception unit 47 has a function of sending a control signal output from the control unit 40 to the control line Lc and delivering the control signal received from the control line Lc to the control unit 40. Further, the dwelling unit 4 includes an operation switch unit 48a including a response button 48b that is operated when answering a call, and a switch input unit 48b that inputs an operation input corresponding to the operation of the operation switch unit 48a to the control unit 40. And are provided. Furthermore, the dwelling unit 4 is provided with a sensor input unit 49 that serves as an interface between the various security sensors (fire detector, gas leak detector, etc.) S installed in the dwelling unit and the control unit 40. That is, in the dwelling unit 4, when a sensor signal notifying the occurrence of an abnormality such as a fire or a gas leak is input from the security sensor S to the control unit 40 through the sensor input unit 49, the control unit 40 notifies the notification sound generation unit 46. A warning sound and a warning message for notifying the occurrence of an abnormality are generated and transmitted from the speaker 41b, and a control signal for notifying the alarm monitoring panel 1 of the occurrence of the abnormality is transmitted from the transmission / reception unit 47 via the control line Lc. The alarm monitor panel 1 is also configured to transmit an alarm for occurrence of abnormality. In addition, the dwelling unit 4 having the call function and the security function in this way is particularly called a housing information board.

  By the way, since the dwelling unit separate line L2 is branched from the trunk line L1, the control signal sent from the lobby intercom 2 via the alarm monitoring panel 1 is transmitted to all the dwelling units 4 connected to the control line Lc. Here, an address (for example, a dwelling unit number) is individually set in the control unit 40 of the dwelling unit 4, and the address of the dwelling unit 4 is designated by selecting the address of the dwelling unit 4 on the lobby intercom 2. A control signal (call command) can be transmitted from the alarm monitoring panel 1 to all the dwelling units 4 via the control line Lc. If the address included in the control signal is its own address, the control unit 40 of the dwelling unit 4 activates the video processing unit 43 and the monitor unit 45 to display the visitor's video captured by the camera of the lobby intercom 2. 4 and the notification sound (calling sound) generated by the notification sound generation unit 46 is transmitted from the speaker 41b. If the resident presses a response button 48b (see FIG. 2) provided on the operation switch unit 48a of the dwelling unit 4 in response to the ringing sound, the control unit 40 is connected to the communication line La. Is connected to the call processing unit 42 and a communication path is established between the lobby interphone 2 and a call can be made only between the lobby interphone 2 and the selected dwelling unit 4. It is possible to display a visitor captured by the camera only on the dwelling unit 4 on the monitor unit 45. When the dwelling unit 4 selected in the lobby intercom 2 has established a communication path with the lobby intercom 2, the end of the call using an appropriate operation button is detected in the lobby intercom 2 or the dwelling unit 4. Then it ends.

  When the call button of the doorphone sub unit 3 is pressed and a call signal is sent to the sub unit connection line L3, the control unit 40 of the dwelling unit 4 that has detected the call signal causes the video processing unit 43 and the monitor unit 45 to operate. The video of the visitor that is activated and captured by the camera of the doorphone slave unit 3 is displayed on the monitor unit 45 of the dwelling unit 4, and the notification sound (calling sound) generated by the notification sound generation unit 46 is transmitted from the speaker 41b. Let Then, if the resident presses the response button 48b of the dwelling unit 4 in response to the ringing sound, the control unit 40 switches to a state in which the communication path is connected to the slave unit interface unit 18 and between the door phone slave unit 3 By establishing the communication path, it is possible to make a call between the door phone slave unit 3 and the dwelling unit 4, and it is possible to display a visitor imaged by the camera on the monitor unit 45.

  The alarm monitoring panel 1 is installed in the manager room of the apartment house, and as shown in FIG. 4, the calling unit 14 for making a call using a handset (not shown) and the dwelling unit number of the dwelling unit 4 An operation unit 12 having a number key for inputting an alarm, an alarm sound generation unit 15 for generating an alarm sound and an alarm message for notifying the occurrence of an abnormality in the dwelling unit 4 and transmitting the alarm sound and a warning message from a speaker (not shown); , A display unit 13 for displaying the dwelling unit number designated by the operation unit 12, a control unit 10 for controlling the operation of the above-mentioned units with the CPU as a main component, and transmission / reception for interfacing the control unit 10 and the control line Lc 11 and a storage unit 16 for storing a broadcast broadcast audio signal as will be described later, and a function for performing a call and a broadcast with each dwelling unit 4 via the call line La, and a control line Lc. Dwelling unit 4 via It receives the control signal for notifying the abnormality to be transmitted has a function for issuing an alarm. That is, in this embodiment, the alarm monitoring panel 1 corresponds to a simultaneous broadcasting device. For example, when the administrator operates the operation unit 12 to input a dwelling unit number and then lifts the handset of the calling unit 14 and goes off-hook, the control unit 10 controls the dwelling unit 4 corresponding to the input dwelling unit number with a control signal ( A call command) is generated and transmitted from the transmission / reception unit 11 to the control line Lc. Similarly to the above-described communication between the lobby interphone 2 and the dwelling unit 4, the selected dwelling unit 4 and the alarm monitoring panel 1 are It is possible to make a call via the call line La only. Broadcasting means that an audio signal is transmitted from the alarm monitoring panel 1 to a plurality (all or a part) of the dwelling units 4, and there is no urgent communication or evacuation guidance to each dwelling unit. For the purpose of emergency contact. For example, when performing broadcast to all the dwelling units 4 from the alarm monitoring panel 1, a control signal (simultaneous broadcast start command) instructing the start of the broadcast from the alarm monitoring panel 1 is sent to each dwelling unit via the control line Lc. In each dwelling unit 4 that is transmitted to the unit 4 and receives this control signal, the control unit 40 connects the call path connected to the call line La to the call processing unit 42 in response to the broadcast start command, thereby monitoring the alarm. A communication channel is established with the panel 1, a broadcast audio signal transmitted from the alarm monitoring panel 1 is transmitted to each dwelling unit 4 via the communication line La, and a broadcast audio is transmitted from the speaker 41 b. The At the end of the broadcast, a control signal (broadcast end command) is transmitted from the alarm monitoring panel 1 to each dwelling unit 4 via the signal line Lc, and the control unit 40 of the dwelling unit 4 receives the broadcast end command. Open the communication path and return to the standby state. That is, in the present embodiment, the speaker 41b for calling is also used as the simultaneous broadcast sound generation means.

  Here, in the dwelling unit 4, a storage unit composed of a non-volatile memory (flash memory or the like) capable of rewriting a broadcast audio signal (hereinafter referred to as "broadcast audio signal") performed from the alarm monitoring panel 1. I remember it in M. That is, the broadcast broadcast audio signal transmitted via the communication line La is converted into a digital signal by an A / D converter (not shown), and then the controller 40 uses a known compression method such as ADPCM (Adaptive Differential Pulse Code Moudulation). The compressed data (broadcast data) is written into the storage unit M and stored (recorded). In addition, in order to reproduce the broadcast broadcast stored in the storage unit M, the control unit 40 reads the broadcast broadcast data stored in the storage unit M and performs an expansion process, and then an analog signal is output by a D / A converter (not shown). It is converted into (broadcast audio signal) and broadcast broadcast sound is transmitted from the speaker 24b. That is, in the present embodiment, the control unit 40 corresponds to a broadcast broadcast reproducing unit. Therefore, in the present embodiment, the broadcast audio signal transmitted from the alarm monitoring panel 1 is stored in the storage unit M, and the broadcast audio signal stored in the storage unit M is read by the control unit 40 and is simultaneously transmitted from the speaker 41b. Since the broadcast sound is transmitted, it is possible to prevent the inhabitant from overhearing the simultaneous broadcast performed when the inhabitant is absent. Note that the control unit 40 of the dwelling unit 4 sends a broadcast broadcast sound from the speaker 41b when a broadcast broadcast audio signal is received, and at the same time stores (records) it in the storage unit M, and a broadcast broadcast mode. The two simultaneous broadcast modes of the silent broadcast mode in which only the sound (sound recording) is stored in the storage unit M without being transmitted from the speaker 41b can be selected by the operation of the operation switch unit 48a. If the silent broadcast mode is selected, it is possible to prevent problems such as disturbing the sleep of dwellers due to the inadvertent output of the broadcast sound. However, if it is notified by the broadcast start command that it is an emergency contact such as an evacuation guidance, the voice broadcast mode is forcibly set.

  Thus, when the control unit 40 of the dwelling unit 4 receives a broadcast start command from the alarm monitoring panel 1 when there is no resident, a communication path is established with the alarm monitoring panel 1 via the communication line La. Then, in accordance with the preset broadcast mode (sound broadcast mode or silent broadcast mode), the broadcast audio signal is stored in the storage unit M without sending or sending the broadcast broadcast sound from the speaker 41b. After receiving the broadcast end command and finishing the recording, a display indicating that there is a recorded broadcast is displayed on the screen of the monitor unit 45. Further, when the control unit 40 of the dwelling unit 4 receives a broadcast start command from the alarm monitoring panel 1 while the dweller is talking to the lobby intercom 2 using the dwelling unit 4, a call is made with the alarm monitoring panel 1 Since the communication path via the line La cannot be established, a display to the effect that the alarm monitoring panel 1 has notified the start of simultaneous broadcasting is displayed on the screen of the monitor unit 45. On the other hand, in the alarm monitoring panel 1, the broadcast audio signal input from the handset is converted into a digital signal by an A / D converter (not shown), and then the control unit 10 compresses the compressed signal by a known compression method such as ADPCM. Data (broadcast data) is written in the storage unit 16 and stored (recorded). Then, when a control signal for requesting transmission of simultaneous broadcasting is transmitted from the dwelling unit 4 that has finished the call with the lobby intercom 2 to the alarm monitoring panel 1, the control unit 10 of the alarm monitoring panel 1 stores the control signal in the storage unit 16. After the stored broadcast data is read and decompressed, it is converted to an analog signal (broadcast audio signal) by a D / A converter (not shown) and sent to the call line La. On the other hand, in the dwelling unit 4 that requested the transmission of the broadcast, the control unit 40 establishes a communication path with the alarm monitoring panel 1 and receives the broadcast broadcast audio signal transmitted via the communication line La, and from the speaker 41b. Send out broadcast audio. That is, in this embodiment, the control unit 40 and the monitor unit 45 of the dwelling unit 4 correspond to the broadcast broadcast notification unit, and the control unit 10 of the alarm monitoring panel 1 corresponds to the broadcast broadcast transmission unit.

  As described above, when the broadcast is performed while the dwelling unit 4 is talking to the lobby intercom 2, characters (for example, “broadcasting”) for notifying the start of the broadcast in the dwelling unit 4 during the call, etc. Is displayed on the screen of the monitor unit 45, so that the resident can be alerted to listen to the broadcast after the call is over, and the resident can be surely prevented from missing the broadcast. it can. However, in this embodiment, broadcast is performed using the communication line La used for a call between the lobby intercom 2 and the dwelling unit 4, but the alarm monitoring panel is provided on a dedicated line for simultaneous broadcast separately from the call line La. 1 and each dwelling unit 4 may be connected, and if a dedicated line for simultaneous broadcasting is provided, a broadcasting audio signal is transmitted to the storage unit M by the dwelling unit 4 even during a call with the lobby intercom 2. It is possible to memorize. If the content of the broadcast is an emergency contact, the control unit 40 of the dwelling unit 4 immediately forcibly terminates the call with the lobby intercom 2 and receives the broadcast broadcast audio signal when the broadcast start command is received. Needless to say.

It is a block diagram showing an embodiment of a dwelling unit according to the present invention. It is a system configuration figure showing an embodiment of an intercom system for apartment houses concerning the present invention. It is a block diagram of the lobby intercom (shared part apparatus) in the same as the above. It is a block diagram of the alarm monitoring board in the same as the above.

Explanation of symbols

1 Alarm monitoring panel 4 Dwelling unit 40 Control unit 41b Speaker M Storage unit

Claims (5)

  The common unit device that is installed at the common entrance of the apartment house and can input and output voice, and the common unit device that is installed in each dwelling unit of the apartment house is connected via a transmission line and the selection unit that the common unit device has Are selected by the visitor's operation, multiple dwelling units that establish a communication path with the common unit device, and each dwelling unit installed in the common unit or manager's room of the apartment house is a transmission line Is a dwelling unit used in an intercom system for collective housing with a simultaneous broadcasting device that broadcasts audio to all or some of the dwelling units at the same time. A communication means for making a call via a transmission line, a broadcast sounding means for converting a broadcast audio signal transmitted from a broadcast apparatus via the transmission line into sound and outputting the sound, and a broadcast audio signal. Remember For collective housing, comprising: broadcast broadcast storage means; and broadcast broadcast reproduction means for reading the broadcast broadcast audio signal stored in the broadcast broadcast storage means and outputting the broadcast broadcast sound from the broadcast sound generation means Intercom system dwelling unit.   2. The dwelling unit of an intercom system for an apartment house according to claim 1, wherein the broadcast sound generation means does not output the sound of the broadcast broadcast while the broadcast broadcast storage means stores the broadcast broadcast audio signal. .   The collective housing according to claim 1 or 2, further comprising a simultaneous broadcast notification means for notifying the start of the broadcast when the start of the broadcast is notified from the broadcast device during a call with the shared unit. Intercom system dwelling unit.   An intercom system for collective housing comprising the shared unit device, the plurality of dwelling units according to any one of claims 1 to 3, and the simultaneous broadcasting device.   A control unit that includes the shared unit, the plurality of dwelling units according to claim 3, and the simultaneous broadcasting device, wherein the dwelling unit transmits a control signal that requests transmission of a broadcast audio signal via a transmission line. The broadcast apparatus includes a signal transmission unit, a broadcast unit that stores a broadcast audio signal for the dwelling unit, a control signal reception unit that receives a control signal transmitted from the dwelling unit via a transmission line, and a control signal When the receiving means receives a control signal requesting transmission of a broadcast audio signal, the broadcast audio signal stored in the storage means is read out and transmitted to the requesting unit via the transmission line. An intercom system for collective housing, comprising a simultaneous broadcast transmission means.

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